be supposed to do sthbe supposed to 加动词原形,还是be supposed 加动词不定式

be supposed to do sthbe supposed to 加动词原形,还是be supposed 加动词不定式
be supposed to do sth
be supposed to 加动词原形,还是be supposed 加动词不定式

be supposed to do sthbe supposed to 加动词原形,还是be supposed 加动词不定式
be supposed to 是一个整体 后面接动词原形
动词不定式 指的是动词本身 和to 没关系 to 只是指示不定式存在的符号而已
比如 but do sth 这个do就是不定式 所以你的提法是错的

be supposed to加动词原形